Grainger GWW

Industrial & DefenseMarket cap $45B7 connections

W.W. Grainger distributes 10M+ MRO (maintenance, repair, and operations) products - tools, motors, safety equipment, and supplies - to 5M+ businesses. Its digital infrastructure (Grainger.com) is one of the largest B2B e-commerce sites. Its MonotaRO business in Japan and Zoro.com in the US capture smaller customers. Every factory, hospital, and school needs MRO supplies; Grainger delivers them.

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Suppliers 3

Companies that sell to Grainger

Dover CorporationIndustrial & Defense · $23BIndustrial parts
Snap-onIndustrial & Defense · $17BProfessional tools distribution
IDEX CorporationIndustrial & Defense · $17BPump and flow components

Customers 4

Companies Grainger sells to

GE AerospaceIndustrial & Defense · $200BIndustrial supplies for GE facilities
CaterpillarIndustrial & Defense · $190BIndustrial parts distribution
BoeingIndustrial & Defense · $120BMRO supplies
United RentalsIndustrial & Defense · $38BMRO for job sites

Other Industrial & Defense companies

GE Aerospace Caterpillar RTX (Raytheon)Siemens AG Lockheed Martin Honeywell Boeing Deere & Company UPS Eaton

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Relationships are compiled by VexMap from company filings, announcements and reporting, and last reviewed September 2026. Spotted something wrong? Tell us. Not investment advice.